public class Test {
    public static void main(String[] args) {
        int[] num=new int[]{1,1,3,4,4,55,55,1,1,6};
        find(num);

    }
    public static void find(int[] num){
        for(int i=0;i<num.length;i++){
            int count=0;
            for(int j=0;j<num.length;j++){
                if(num[i]==num[j]){
                    count++;
                }
                }
            if(count==1){
                System.out.println(num[i]);
            }
        }
    }
}
